The greatest indictment of the hard-driving slave system in the 18th-century British Caribbean was that the enslaved population never achieved natural population increase (except briefly in Barbados but only by 1810). Abolitionists seized on the failure of slave populations to thrive as a sign that slavery was immoral.
In the summer of 1948 Alexander Fleming, known around the world as the discoverer of penicillin, visited Spain. Fleming had published his famous paper on the antimicrobial effect of the Penicillium notatum mould in 1929.
The case of Mary Toft—the woman who gave birth to rabbits in 1726—has an enduring appeal. I remember the first time I encountered her as a final year undergraduate, both fascinated and appalled by the details of the case.